Music-sheet roller mechanism.



P. W. WOOD.

MUSIC SHEET ROLLER MECHANISM,

APPLICATION FILED A3313, 1911.

Patented Mar. 11, 1913.

5 SHEETS-SHEET 1.

LV/ TNESSES F. W. W001). MUSIC SHEET ROLLER MECHANISM.

APPLICATION FILED APR.13, 1911.

' Patented Mar.11,1913.

5 SHEETS-SHEET 2.

WITNESSES.

ALMA A TORNEY.

P. W. WOOD.

MUSIC SHEET ROLLER MECHANISM.

APPLICATION FILED APR.13, 1911.

r 1 055 690 Patented Mar. 11, 1913.

5 SHEETS-SHEET 3.

WITNESSES: JNVEN TOR.

A T'TORNEY P. W. WOOD, MUSIC SHEET ROLLER MECHANISM.

APPLICATION FIT-ED M12513, 1911.

1,055,690. Patented Mar. ,11, 1913.

6 SHEETS-SHEET 4.

6' 1 f 6 S 42 mfii 6/ I Q A 0 I 7/ Q Q 0 1 I Q J i o o z Q 3 3 3g 35 I S I I 2 7 ///////////m/ WITNESSES INVEN Toke;

P. W. WOOD.

MUSIC SHEET ROLLER MECHANISM APPLICATION FILED APEJB. 1911.

1,055,690. Patented Mar.11,?913.

5 SHEETSSHEB 5.

l'V/T/VESSES: 7, I MZNVENTOR.

osacoo.

mvrrao STATES PATENT onion.

FREDERICK W. WOOD, OF KANSAS CITY, MISSOURI, ASSIGNOR T0 THEBERRY-WOOD PIANO PLAYER COMPANY, OF KANSAS CITY, MISSOURI, A CORPORATION OF MIS- SOURI.

To all whom it may concern Be it known that I, Fnnonaro r \V. 001), a citizen of the United States, residing at Kansas City, in the county of Jackson and State of ivlissouri, have invented certain new and useful Improvements in Music-Qheet Roller Mechanisms, of which the following is a specification.

My invention relates to improvements in music sheet roller mechanisms, such as are employed in automatic piano players.

It is particularly adapted for use in connection with pneumatically operated piano players.

One. object of my invention is to provide locking means by which the driving mechanism is positively retained in driving rela tion to the feed roller and prevented from accidental disengagement therefrom during the operation of playing a music sheet.

Another object of my invention is to provide means, controlled by the music sheet and actuated by the driving mechanism ,l)y which the driving mechanism is disengaged from driving connection with the feed roller after the sheet has been played.

A further object of my invention isto provide yielding means, such as a spring, for connecting the driving shaft and the pneumatic, which moves the shaft to the winding or playing position, thereby per mitting a certain range of movement of the pneumatic during the playing operation,

without danger of the shaft moving from the playing position.

My invention provides also yielding means for shifting the shaft to the playing and rewinding positions, such yielding means eliminating danger of injury to the driving gearing connected with the driving shaft, such as might occur upon shifting the shaft to the different positions, if unyield; ing means were employed to effect such shifting.

Another object of my invention is to provide a structure in which the rolls of music may be changed without the necessity of stopping the operation of the driving mechanism.

Still another object of m invention is to provide at one end of the eed roller at the MUSIC-SHEET ROLLER MECHANISM.

Specification of Letters Patent. Patenteddlfl gug 11 19113 Application filed April 13, 1911.

Serial No. 620,857.

illustrate one form of my invention, Figure 1 is a view partly in elevation and partly broken away of my improved roller mechanism. In this view the driving shaft and other parts are shown in the playing positions. Fig. 2 is an enlarged vertical sec tion on the line (1-?) of Fig. 1, the driving shaft being in the playing or winding position. tion on the line 0'0Z of Fig. 1, the driving shaft being shown held in the neutral position by the gravity actuated locking lever. Fig.

Fig. 3 is an enlarged vertical sec- 4 is a view similar to Fig. 3, the driving shaft being shown in the rewind'ing position. Fig.- 5 is a view similar to Fig. 2, excepting that the driving shaft is in the rewinding position and the cam on the driv ing shaft is shown, in Figf"5,- engaged with the slidalole plate carried by the pneumatic which controls the rewinding operation. Fig. 6 is an enlarged longitudinal vertical section of the feed roller, the trip lever be-" ing shown held by the music sheet 'in the inner or neutral position. Fig. 7 is a fragmental plan view, reduced, of portions of thetwo ends of a-"music sheet, one portion con aining the perforations which control the rewinding and the other portion show-- ing the cut out portion in oneedge which permits the trip lever to drop into operative position. Fig. 8 is a horizontal section on the broken line 6- of Fig. Fig. 9 is a cross section on the broken} line g-h of Fig. 8. Fig. 10 isan enlar ed cross sec-- tion on the dotted line 0 Fig. 8. Fig. 11 is an enlarged horizontal section on the line 7c-Z of Fig. 1. Fig. 12 is a view partly in perspective and partly invertical section of a portion of the mechanism which controls the rewinding operation,

Similar reference characters designate similar parts.

pinion 8 meshes with a spur gear wheel 9 secured to a shaft 10 which is rotatively mounted in the frame 2.

11 designates a horizontal rotary driving shaft which has its right end,as viewed in Fig. 1, rotatively mounted in a collar 12 having oppositely disposed trunnions 13 re-' spectively pivoted in horizontal holes provided in the two arms of a U shaped bracket 14 which is secured to an upright plate 15,

the lower end of which is se cured to the base 1.

.Any suitable means may be provided for rotating the shaft 11. In the drawing I have shown a friction disk 16 secured to the shaft 11 and having its periphery bearing against a friction driving disk 17 which may be rotated by a suitable motor mechanism,

not shown.

On the left end of the shaft 11, as viewed in Fig. 1, is rigidly secured a pinion 18 which is located between the gear wheels 7 and 9. When the shaft 11 is swung on its pivotal support, above described, to the winding or playing position, shown in Fig. 1, the pinion 18 will mesh with the-gear wheel 7 and will rotate the feed roller 3 so as to wind thereon a music sheet 19, one end of which may be secured to the periphery of the roller 3 in any desired well known manner. With the driving shaft 11 in the playing position, shown in Fig.1, the rewinding roller 4, upon which the music sheet 19 is wound prior to being played, may

be free to rotate to permit the music sheet 19 being drawn by the feed roller 3 over the tracker bar 20, which is secured to the frame 2 in a horizontal position between the rollers 3 and 4. lVhen the driving shaft is swung upwardly on-its pivotal support, the pinion 18 will mesh with the gear wheel 9, thereby causing rotation of the roller 4 in a direction such that the music sheet 19 will be rewound upon said roller. For forcing the driving shaftll to the playing position shown in Figs. 1 and 2, the following described mechanism is preferably provided: A. coil spring 21 has its upper end secured to a collar 22 in which the shaft 11 is rotative. end of the spring 21 is secured to the vertically movable member 23 of a pneumatic 24, which may be an ordinary bellows. The bellows 24 communicates with a vacuum ready described.

The lower I chamber 25. of a wind chest 26 supported on 25. When the. air is exhausted from chainber 25, it will also be exhausted from the pneumatic 24 by way of the air passage 27 which connects the pneumatic with chamber 25. Upon the pneumatic 24 collapsing to the position shown in Fig. 1, due to withdrawal of air therefrom, it will, through the spring 21 and .collar 22, draw the driving shaft 11 downward to the playing position, shown inFigs. 1 and 2, in which position the driving shaft will remain until the roll of music has been played, and the larger portion of the music sheet 19 has been woundon the roller 3. After the roll of music has been played, .it will be necessary to rewind the music sheet on the roller 4, after which the music sheet may be removed in the usual manner and a new music sheet placed upon the roller 4 and connected at one end to the periphery of roller 3, as al- To shift the driving shaft 11 from the playing position, shown in Figs. 1 and 2 to the rewinding position, shown in Figs. 4 and 5, the following mechanism is preferably provided: A coil spring 28 has its lower end secured to the collar 22, its upper end 'matic 24 expands, which occurs after a roll of 'music has been played, the pull of the spring 21 will cease and then the spring 28 position shown in Figs. 4 and 5. In order that the pneumatic 24 may not be permitted to expand, even if the vacuum in it and in chamber 25 is destroyed, accidentally or otherwise, until .the roll ofmusic has been played, a safety locking mechanism is provided which holds the member 23 of the pneumatic 24 from rising above a predetermined position. This locking mechanism preferably consists of a latch 30 which is supported by a horizontal pivot pin 31 mounted in a bracket 32 supported on the wind chest 26, the latch being adapted to automatically lockingly engage a projecting horizontal plate 33 secured on the upper side of the member 23. The latch 30 is normally held in position for engaging with the plate 33 by a spring 34 supported by a screw 35 secured to the chest 26, as shown in Fig.1. I

For automatically swinging the latch 30 to a position in which the plate 33 will be released after the roll of music. has been played, I preferably provide the followiz'ig the base 1.. The air may be'exhausted in the usual manner from the vacuum chamber will swing the shaft 11 to the rcwinding being secured to a plate 29 mounted on top ing position. As soon, however, as the pneu- V dnctor 50 connectsthe j,

. as shown in w is normal 1 slidably mounted a by means of conduct i 1 38 is provided :er 40, which may co ecmnn t. :vacunni 11 Lil ll tutiaSd by a small 5 the phragin'atat wnic from the to be raised by 2 to strike and :jiu

supports a valve it lot and which. normallv which dapted to co and the passage 87. I air inlet a: which, wl.=.er

ap ted so as which t a. i.

air passage 4,9 in th 20, shown 1n Fig. 12. The capat passage t3 .e &9, so that when passage uncovered sui'li cient air pressure w.. passage to lift the l One or more lon pcr-- usual peribra music '19, -r the sheet p riorations it) in the tions 51, are ovided in 'Z' and 12.

phragrn 3 air inlet o ope connect chamber pne'mnafc tion shown v her, designated held e;

cal'slot 56 through 57 that serve as normally hold iii-Fig. 2, a coil s cured to the apps the spring a point beiow th the lowerend of '1' a position to when the plate shown Fig. 5, a sition shown in said horizontal plate cured to the latch 3t, disposed abovea ho" is secured to valve oi, the wind chest 28 by horizontal pintle Th ed to normally close a vertical air inlet 64 plate 60, thereby swinging the valve 61 to At the same time the the open position. plate 59 will swing the latch 30 to a position releasing the plate 33 and member 23. As soon as the valve 61 opened, air entering the vacuum chamber 25 and the pneumatic 24. will cause the pneumatic to expand,

the pneumatic by this time being ttrce from the latch 30. The strain onthc spring 21 will thus be removed and the coil spring will draw the driving shaft 11 upward into the rewinding position shown in F i and 5, The roller 4- will then be caused to rotate so as to rewind the music sheet 19, in the manner already described. lVhile the music sheet is being rewonnd, the valve (it should heretained in the open position, so that the music sheet will not be playeddurinnj the rewindingoperation, and also to prevent the, 9

pneumatic 24: from being collapsed so as to pull down the shaft 11 from tho rcwinding position. v

To hold the valve (31 open while the roll' oft music is being rcwoond on roller 4-, 1 preferably provide the following described mech anism llctcrring particularly to Fl 1, 2, 5, 8 and 10, (ST designates a horizontal rock shaft pivotally mounted in the frame 2 and prgwidcd at one end, adjacent the roller 3 with a vertical crank arm (38. Secured rigidly at its lower end to the shaft 67 is an H n} wardly extending crank arm GQ having a hoohIO at its upper end which is adapted,

when the plate 60 is depressed, as shown in Fig. to engage and hold the said plate in the depressed position until the rock shaft '67 is rocked so as to free the plate 60 from the book 70. The rock shaft ()7 is normally held in position for the hook 70 to engage the plate 60 by a Vertical spring 71 the upper end of which is secured to the frame 2, and the lower end of which is secured to a horizontal rod 72 which is secured to a collar 73 rigidly secured to the rock shaft 67. lVhcn the cam GOdepresses the plate 55, thereby opening the valve (51., and releasing the latch 30 as has been described, the plate 0 will. strike the hook 70, and, by forcing the hook and rock shaft carrying it to swing, will pass under and be held by the hook 70 until the roll has been rcwound on the roller t, After the roll has been rewound, and it is desired to replay the music which has just been played, the crank arm 68 of the rock &

shaft 67 is moved so as to release the plate 60 so moving the crank arm 68 I will now describe.

Referring to Figs. 1 and 6, 74 is a trip lever disposed lengthwise in the roller 3' to which the inner end of the lever is pivotally.

connected by a transverse pin 75 mounted in a radial post 76 secured to the inner periphery of the roller 3. The trip lever 74 extends through a radial slot 77 in the adjacent end of the roller 3 and is adapted to have its outer end strike the crank arm 68 so as to release the hook 70 from the plate 60, when the trip-lever 74 is properly positioned and the roller 3 is rotated in a direction opposite the winding direction. In order that the trip lever 74 may be normally held out of striking distance from the crank arm 68, said lever is provided with a lateral projection 78 which is movable radially in a longitudinal slot 7 9 provided in the roller 3. The length of the projection 78 is such that the music sheet 19 will'normally hold the trip lever74l. in a position that the lever will not strike the crank arm 68. The end of the music sheet 19 which is attached to the roller 3, is provided with a longitudinal notch 80 along one edge of the sheet. This notch is so disposed that when unwound, as

shown in'Fig. 1, the sheet 19 will not sup port the lever 74, which will drop to the position shown in Fig. 1, in which position, the crank arm 68 will be struck by the lever 74, upon which the hook 70 will be released from the plate 60. The valve 61 willthen close and the-pneumatic 24 will be collapsed, thus operating the driving mechanism so as to rotate the roller 3 to wind thereon the sheet 19. The sheet 19 will then again be played, and after being played, the first perforation 52 in the sheet 19 registering with the air passage 49 of the tracker bar, will permit the air to enter the passage -12, thereby effecting the collapsing of the pucuu'latic 236 in the manner I have already described. The valvc (31 will then be opened by the mechanism conncctcd with the pneumatic 36, lhercby pcrmiliing air to enter the chamber 25 and the pniuunatic 21-. 21 will lhcn expand and will thus permit 'thc spring .28 to draw the driving shaft 11 lo the rcwinding position, after which the. shccl 19 will he again rcwound upon the roller 4 as has been described.

To remove or insert a music roll 19 withv out stopping the motor driven shaft- 11, I

have provided a lever 81 which is pivoted on a screw 82 secured horizontally to the frame 2. This pivot screw is disposed in the lever 81 and relative to the shaft 11 so that the lever 81 will drop by gravity from the locking position, shown in Fig. 3 to the release po- .sition shown in Fig. 2 when the shaft 1.1 is

drawn dmvnward out of engagement with The pneumatic the lever 81. In operating this part of my invention, the lever 81 is swung from the re,

.the trip lever 74 to drop to the operative position, shown in Fig. 1. The lower end and forward edge of the lever 81 is rounded at 83, so that when the lever 81 is swung to the locking position shown in Fig. 3, the lever 81 will strike and depress the shaft 11 to the neutral position in which, as shown in Fig. 3, the pinion 18 will be disengaged from the gears 7 and 9. Both rollers 3 and 4 will now be free to rotate. The music roll may now be detached from both rollers and a new music roll substituted for the roll removed, the starting-end of the new roll being secured to the roller 3, care being taken to keep the lever 74 raised, when the roller 3 is retractively rotated, in detaching and afiixing to said roller the end of the music sheet. After the new, roll has been mounted in playing position on the rollers 3 and 4:, the rewinding roller may be turned by hand so as to withdraw the sheet from the roller 3, thereby retractively rotating the roller 3 until the lever projection 78 drops through the slot 79 and notch 80. When this occurs the lever 74 will trip the crank arm 68, thus I causing the rock shaft 67 to rock and release.

the hook 70 from the plate 60, after which the spring 65 will close the valve 61. The" pneumatic 24 will then collapse thus drawing the shaft 11 to the playing position, and the roller 3 will be rotated to wind thereon the music sheet 19, and lever 81 will swing by gravity to the release position, After the new roll'has been mounted, as above described, on therollers 3 and 4, the machine may be again started in operation asfollows. The lever -81. may be swung from the locking position. to the release position shown in Fig. 2. The shaft 11 being thus released will be drawn upward by the spring 21 the valve 61 being open. The roller 4 -"grill then be rotated so as towind thereon the sheet 19 until the prdjection78 drops' through the slot 79 and notch 80, after which. as above described, the lever 74 will trip the crank arms 68 so as to cause the valve (31 to be closed, the pneumatic 24 operated to force the shaft 11 tothe playing position, and the rolleij 3 rotated to wind thereon the sheet 19. i

As shown in the drawings, the frame 2 is provided with a vertical slot 8 1 through which the driving shaft 11. extends, the slot serving as a guide for preventing lateral movement of the shaft 11. The rear edge of the lower end of the lever 81 may be provided with a downwardly extending portion 85 adapted to strike the shaft 11 to limit the @for rotating the roller when the shaft is til a roll has been played. 7 As the valve 61, which controls admission of air to thevacuum system, is forced to the open posi-.

tion by the directly applied power of the driving mechanism, the starting intd'operationof the rewinding mechanism, after a ro l has been played, is assured.

I am aware that many modifications of my invention, within the scope of the appended claims, may be made, and I, therefore, do not limit my invention to the structure shown and described.

Having thus described my invention, what I claim and desire to secure by Letters Patent, is:

1. In musicsh'eet roller -mechanisms, a roller adapted to wind thereon a music sheet, a rotary driving shaft, means for rotating the roller when the shaft is moved to a predetermined position. a pneumatic, and

yielding means actuated by the pneumatic for moving the shaft to said position.

2. In music sheet roller mechanisms, a roller adapted to wind thereon a music sheet, a rotarv driving shaft. means for retating the roller when the shaft is moved to a predetermined position, a pneumatic, and

a spring by which the pneumaticmioves the shaft to said predetermined positi'o n.

3'. In music sheet roller mechanisms, a roller adapted to wind thereon. a music sheet, a pivoted rotary driving shaft, means for rotating the roller when the shaft is swung to a predetermined position, a pneumatic, and yielding means by which the pneumatic may swing the shaft to said predetermined position.

4. In music sheet roller mechanisms, a roller adapted to wind thereon a music sheet, a pivoted rotary driving shaft, means swung to, a predetermined position, a pneuniay swing the shaft to saidpr'edetermined "roller adapted to .wind there'on'a' music 'sheet, arotary drivingshaft; means for rotating the roller when the shaft is moved to a predetermined "position, yielding means for moving said shaft from said position, a

pneumatic, and yielding means by which the shaft may be moved by the pneumatic to matic, and a springby which the pneumatic .7 said position against the pressure of the first named yielding means.

6. In music sheet roller mechanisms, a

roller adapted to wind thereon amusic sheet, a rotary drivingshaft, means for rotating the roller when the shaft is moved to a predetermined position, a spring formoving the shaft from said position, a pneumatie, and yielding means by w'hieh'the shaft may be moved by the pneumatic to said position against the pressure of said spring. i

7. In music sheet roller mechanisms, a roller adapted to wind thereon a music sheet, a rotary driving shaft, means for rotating the roller'when the shaft is moved to a predetermined position, a spring for mov ing the shaft from said position, a pneumatic, and a spring by which the pneumatic may move the shaft to said position, the second named being of greater strength than the first named spring.

8. In music sheet roller mechanism s, a.

roller adapted to wind thereon a music sheet. a pivoted rotarv driving shaft, means for rotating the roller when the driving shaft is swung to a predetermined position, a spring for swinging the shaft from said position, a pneumatic. and a spring which is stronger than the first named spring and hv which the pneumatic may swing the shaft to'said position.

9'. In a music sheet roller mechanism, a roller, roller driving mechanism, a pneumatic. means by which when the pneumatic is collapsed, the driving means will he 0perated to rotate the roller. locking means for holding the pneumatic collapsed, and means actuated by the driving'means for releasing the pneumatic from said locking means.

10. Ina music sheet roller mechanism, a roller, roller driving mechanism, a pneumatic, means by which when the pneumatic is operated the driving means will be'operated to rotate the roller, locking means for holding the pneumatic in position for operating the driving means, means actuated by the driving means for releasing the pneumatic from the locking means, and

means controlled. by the music sheet for controlling said releasing means.

" 11. In a music sheet roller mechanism, a roller, roller driving mechanism, a pneumatic, means by which when the pneumatic is operated the driving means will he opmeans to rotate the roller, means actuate by the driving means for releasing the pneumatic from the looking means, a tracker bar, and means controlled by the tracker bar for controlling the operation of said releasing means.

12. In a music sheet roller mechanism, a r tary driving shaft, a pneumatic having a too tie

12o .er atedto rotate the roller, locking means for holding the pneumatic in-position for operating the drivin movable part, means by which the shaft is moved into an operative position when the movable part is moved to a predetermined position, locking means for holding said part in said position, and means actuated by the shaft for releasing the pneumatic from said locking means.

13. In a music sheet roller mechanism, a rotary driving shaft, a cam on said shaft, a pneumatic, means actuated by the pneumatic for moving the shaft-into an opera tive position, locking means for holding the pneumatic in aposition in which it will hold the shaft in said operative position. and means actuated by the cam for releasing the pneumatic from the locking means.

14. In a music slieet roller mechanism, a rotary drivingshaft, a cam on said shaft, a pneumatic having a movable part, means by which when said movable part is moved to a predetermined position the shaft ,will be moved into an operative position, a latch for holding said part in said predetermined position, and means actuated by the cam for releasing the latch from the said part.

15. In a music sheet roller mechanism a 7 rotary driving shaft, a cam. on said shaft, a pneumatic having a movable part,- means by which when the movable part is moved to a predetermined position the shaft will be moved to an operative position, a locking means for holding said part in said predetermined position, means actuated by the cam for releasing the locking means from said part, and means controlled by a music sheet for controlling said releasing means.

16. In a. music sheet roller mechanism, a rotary drivingshaft, a cam on said shaft, a pneumatic having a movable part, means by which when the movable part is moved to a predetermined position the shaft will be moved to an'operative position, a locking means for holding said part in said predetermined position, means actuated by the cam for releasing the locking means from said part, a tracker bar, and means controlled by the tracker bar for controlling said releasing means. i

17. in a music sheet roller mechanism, a

rotary driving shaft movablealternately to a Winding position and to a rewinding position, a Wind chest having a vacuum chamher, a pneumatic communicating with the said chamber, means by which when the pneumatic is collapsed the driving shaftwill be moved to the winding position, means fonm'oving the shaft to the rewinding posit-ion when the pneumatic is not collapsed, and means actuated by the shaft for opening the vacuum chamber to the atmosphere so as pneumatic.

18. In a music sheet roller mechanism, a rotary driving shaft; movable alternately to wiadlng and to rewmding positions,'a wind.

to'permit the expanding of the chest having a vacuum chamber and having an'air inlet communicating with said chamber, a valve for closing said inlet, a pneumatic comn'iunicating with said chamber, means for moving the driving shaft to'the winding position when the pneumatic is collapsed, means for moving the shaft to the rewinding position when the pneumatic is expanded, and means actuated by the shaft.

lapsed, means for moving the shaft to the. rewinding' position when the pneumatic is expanded, a valve for closing said 1nlet,-

means actuated by the shaft for opening said valve, and means controllable by .a music sheet for holding the valve open.

20. in a music sheet roller mechanism, a rotary driving shaft movable alternately to winding and rewinding positions, a wind chest havinga vacuum chamber and an air inlet communicating with said chamber, a valve for closing said inlet, a pneumatic communicating with said chamber, means for mov ing the shaft to the winding position when the pi'ieumatic is collapsed. means for moving the shaft to therewinding position when the pneumatic is expanded, means actuated by the shaft for opening said valve, means controlled by a musicsheet for holding the valve open, and means controllable by the music sheet for controlling the valve openmg means.

21. In a music sheet roller mechanism, a rotary drlvm 7 shaft movable to and from a winding position, a wind chest having vacuum chambe and an inlet communicating with said chamber and communicating with the atmosphere, a valve for closing said inlet, a pneumatic said chamber, means for moving the shaft tothe winding position when the pneumatic is collapsed, means for moving the shaft from the winding position when the pneumatic is expanded, and means actuated by the shaft for moving the'valve to the open position. I

22. in a musi sheet roller mechanism, a rotary driving shaft movable to and from a' winding position, a wind chesthaving avacuum chamber and an air-inlet comimunleating with the chamber, a valve for clos mg said inlet, a pneumatic communicating with said chamber, means formoving' the shaft to the winding position when the pneumatic is collapsed, means formeving position. when the shaft from the winding the pneumatic. is expanded,

communicating with 4 said ing said inlet, a pneumatic connnunicating With said chamber, means for moving the shaft to the winding position when the pneumatic is collapsed, means for moving the shaft from the Winding position when the pneumaticis expanded, locking means for holding the valve open, locking means for holding the pneumatic collapsed, music sheet controlled means for releasing the valve locking means from the valve, and music sheet controlled means for releasing the pneumatic locking means from the fmeumatic.

2%. In a music sheet roller mechanism, a winding roller, a wind chest having a vacuum chamber and an air inlet communicating with said chamber, a valve for closing said inlet, a pneumatic communicating with said chamber, means by which when the pneumatic is collapsed the Winding roller will be rotated, means actuated by said roller rotating means for opening the valve, and music sheet controlled means for controlling the valve opening means.

25. In a music sheet roller mechanisnna winding roller, a wind chest having a vacuum chamber and an air inlet communicating with the chamber, a valve for closing said inlet, a-pneumatic communicating" with chamber, means by which when the pneumatic is collapsed the Winding" fr'olier will be rotated, means actuated by the roller rotating means for opening the valve, music sheet controlled means for locking the valve open, and music sheet controlled means for controlling the valve opening means.

26. In a music sheet roller mechanism, a rotary driving shaft-movable alternately to Winding and rcwinding positions, and re leasable locking;' means for holding the shaft from moving from a neutral position to the rewinding position, but which permits the shaft to move from the neutral to the Winding position.

27. In a music sheet roller mechanism, a rotary driving shaft movable alternately to Winding and rewinding' positions, and releasable locking means for holding the shaftt'rom moving from a neutral position to the rewinding position, but whiclnpermits the shaft to move to the winding position, the locking means being automaticallyrcleasable when the shaft is moved to"'thc winding position.

28.111 a music sheet roller mechanism, a

to the Wind will swr e;

7 Wind chest h the valve win I alternately movable to winding ndingg positions, and a lever win in a terminecl position holds the sham from 9' from a neutral to the rewinzjliug in said. positioi shaft to move In a an rotary (lllvifig Shulv winding and rcivinding lever which. in the loch the shaft from niov from rewindin to the wi the le olier mechanism, a nate v movable to ions, and a v the pivotal point of so that the lever from the locking meved to the position iv winding pus,

In a i rotary drivin mechanism, "a re alternately to ons, pneumati. .-or moving the cal ly controlled nd reieasable shaft to said means for h dii' the rewindin pow meat to the wind' 31. in music rotary div winding and v for movin the shaft tion, a W I named spri. winding pos first named. erati n th permits its moveeet roller mccl'ianisni, a l ely movable to oositions, a spring to the ire-winding posi- ,l shaft to the the tension of the r mechanism, a rotary drivi rewind'n operating i e shaft to euinatically connne of the two pos trolled a sum of the ate .5 the springs being stlong;

. In a u v i" mechanism, a

metro, a spring moving the weaker tor moving the rotary urivi; actuated by shaft to wind position, than the first namel sprin shaft to rewind means for holding from a neutral to the rewinding position, but which permits the shaft? to move to the winding position.

in a music sheetrolier mechanism, a Vls vacuum chamber anda'n air inlet commun I e *alve for elosina said inlet, locking means u for holdin the e open aroller aola ted when rotated one direction to Wind there on a music sheet, and mcansactuated by the roller for 'rclca tee roller rotated in the opposite direction and thareleasing means which when position holds neutral to the were ts it to movet from moving to r then'tlie first a winding and "inst the tenositron, and releasable the shaft from movmg- 213 with said chamber,

S: a the inching means from is not held in an inoperative position by the music sheet.

- 35. In a music sheet rollermechamsm, a

wind chest having a vacuum chamber and upon retractive rotation of the roller, the

' engagement of the trip with the locking means taking place at the outer side of the said flange. I

36. In a music sheet roller mechanism, a rewinding roller, driving mechanism for rotating sald roller, a pneumatic, means controlled by the pneumatic for placing the driving mechanism intoj driving relation to the roller, a tracker bar having an air passage adapted to ,be controlled by a music sheet, and means controlled by air passing through saidpassage forcontrolling the operation of said pneumatic. I 1:37. In a' music sheet'roller mechanism, a g'roller having a peripheral opening, a wind ,chest having a vacuum chamber and an air {inlet communicating with the chamber, a

valve-for closing said inlet, locking means .for holding the valve open, and a trip device carriedby the roller for releasing the locking means, the trip having a portion ex v tending through said opening and by which a musicsheet when wound on the roller may hold the trip out of position for engagement with the locking means.

38. In a music sheet roller mechanism, a roller having a peripheral opening, 'a wind chest having a vacuum chamber and an air inlet communicating with the chamber, a valve for closing said inlet, locking means for holding the valve open, a trip carried by the roller for releasing the locking means, the trip having a portion extending through said opening, and a music sheet adapted to be wound on the roller and to engage said ex.-

tending portion of the trip for holding the trip disengaged from the said locking means, the sheet having a notch adapted to register with said projecting portion of the trip to permit movement of the trip to a position in which it may engage the locking means.

In testimony whereof I have signed my name to this specification in presence of two subscribing witnesses.

FREDERIGK W. WOOD. a

v I Witnesses E. B. HOUSE, WARREN D; HoUsE. 

